What is the difference between mean, median, and mode in a dataset?The mean is the average of all data points, calculated by summing them and dividing by the number of points. The median is the middle value when data points are ordered from smallest to largest. The mode is the most frequently occurring value in the dataset.
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What are the values of basic trigonometric ratios (sine, cosine and tangent) for major angles like 0°, 30°, 45°, 60°, and 90°?
What are the values of basic trigonometric ratios (sine, cosine and tangent) for major angles like 0°, 30°, 45°, 60°, and 90°?For 0°: sin=0, cos=1, tan=0; For 30°: sin=1/2, cos=√3/2, tan=1/√3; For 45°: sin=√2/2, cos=√2/2, tan=1; For 60°: sin=√3/2, cos=1/2, tan=√3; For 90°: sin=1, cos=0, tan=undefined.
How do you find the area between two curves using integration?
How do you find the area between two curves using integration?To find the area between two curves, you first identify the points of intersection. Then, integrate the difference between the top function and the bottom function over the interval defined by these points. Mathematically, this is expressed as ∫[a,b] (f(x) – g(x)) dx, where f(x) is the upper curve and g(x) is the lower curve.
What is the formula for finding the sine of an angle in a right triangle?
What is the formula for finding the sine of an angle in a right triangle?The sine of an angle in a right triangle is defined as the ratio of the length of the side opposite the angle to the length of the hypotenuse. Mathematically, it is given by the formula: sin(θ) = opposite / hypotenuse, where θ is the angle in question.
How can I solve a system of non-linear equations using substitution or elimination methods?
How can I solve a system of non-linear equations using substitution or elimination methods?To solve a system of non-linear equations using substitution, solve one equation for one variable and substitute this expression into the other equation. For elimination, manipulate the equations to eliminate one variable, then solve the resulting equation. Both methods require algebraic manipulation and may involve iterative or numerical techniques for complex systems.
How do you calculate the p-value in hypothesis testing and what does it represent in the context of making a statistical decision?
How do you calculate the p-value in hypothesis testing and what does it represent in the context of making a statistical decision?The p-value in hypothesis testing is calculated using statistical tests like t-tests, chi-square tests, or ANOVA. It represents the probability of obtaining test results at least as extreme as the observed results, assuming the null hypothesis is true. A smaller p-value indicates stronger evidence against the null hypothesis, guiding the decision to reject or fail to reject it.
How do you solve the equation 2x + 5 = 15?
How do you solve the equation 2x + 5 = 15?To solve the equation 2x + 5 = 15, first subtract 5 from both sides to get 2x = 10. Then, divide both sides by 2 to isolate x, resulting in x = 5.
How do you simplify the expression (3x^2 + 4x – 5) – (x^2 – 2x + 7) ?
How do you simplify the expression (3x^2 + 4x – 5) – (x^2 – 2x + 7) ?To simplify the expression (3x^2 + 4x – 5) – (x^2 – 2x + 7), distribute the negative sign and combine like terms. This results in: 3x^2 + 4x – 5 – x^2 + 2x – 7. Combining like terms, we get: (3x^2 – x^2) + (4x + 2x) + (-5 – 7) = 2x^2 + 6x – 12.
How do you solve quadratic equations by factoring?
How do you solve quadratic equations by factoring?To solve quadratic equations by factoring, first write the equation in the form ax^2 + bx + c = 0. Then, factor the quadratic expression into two binomials. Set each binomial equal to zero and solve for the variable. The solutions are the values of the variable that satisfy the original equation.
How do I solve for x in the equation 3x + 7 = 16?
How do I solve for x in the equation 3x + 7 = 16?To solve for x in the equation 3x + 7 = 16, follow these steps: First, subtract 7 from both sides of the equation to isolate the term with x: 3x + 7 – 7 = 16 – 7, which simplifies to 3x = 9. Next, divide both sides by 3 to solve for x: 3x / 3 = 9 / 3, resulting in x = 3.
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